Improvement in the manufacture df ichthyocolla



y rollers.

UNITED STATES PATENT Clarion..

' EBENEZER'ROWE, or -RooKroRn MASSACHUSETTS.

:'IMPROVEMENT iN THEJMANUFACTURE DF'iCHTHYOGOLLA.

Specification forming part of Letters Iyatent'No. 5,978,v dated December 19, 1848.

-gures, and references thereof.

0f the' said drawings,`Figure l denotes a. top View of my improved machine for rolling the pasty mass of fish-bladder to a thin sheet. Fig. 2)`is a horizontal section of the hollow u rollers or'cylinders of the same, the cold walter cistern and vpipes leading into the cylinders or After the ainhladderof vthe yfish has. been suitably prepared for manufacture into isin` glass or ichthyocollaby breakin g or reducing' it" in a machine or mill consisting of a roller and knives by which the air-bladder iscut or 4reduced into small pieces, it is'next tolbe run or caused to pass between .iron or composition rollers, so as to convert itinto long and very thin sheets or strips. Afterv this process has been completed the saidsheets are dried tor use. l 4 i lGrreat care is required to preventl the -materialfrom becoming` so soft while passing vbetween the ilatteninglrollers asfto stick or adheretothein, the softening taking place in,`

consequence of the heat generated during the operation.v i In order to. overcome 'thehe'at it has been customary to 'place ice over or upon the outside surface of the rollers, and ther permitrit to reniain until therollers have beenvvv suiiicientl'y cooled.' This -beingeffected and` the ice'having lieen removed, the rollers were 'wiped dry and Vput in motion. The operation of iiatteninga mass of ichthyooo'llay was next 'carriedfou u'ntiflv the rollers became so heated as to render it necessaryto again apply ice to them.v Such a mode of' cooling the rollers nec essarily causesv a considerable loss ot' time, andvbesides this is attended with one greatl ',lisadvai1tageviz., the. moistening of the ex-l ternal surface of the cylinders to `such extent that some time .must elapse before they can be' dried sufficiently for use.

' In my improved method of cooling the rolln .'.Ler will he eii'ectuaily driven out' by the coldA ers I make them hollow, as seen in' Fig.

AiB being said rollers, arranged onthe top of'the frame C. Each of thelsaid rollers is.,

provided with a solid journal, b, extending from thccmiddle part of one head, a., oi'it1 and also with a hollow or tubular journal, c, madev to extend from the 'middle part of the other head of it, as seen in the drawings. The

journals so made are to run and be supported in'boxes, which are "provided with adjustingscrews orzother uitable contriiances, bywheh one of the roll rs maybe movedteu'ard or awayfroin the other, las.circumstances may require, such adjustable contrivances beingy now used in machines which the .solidrollers.

Through each tubular journal c a tube, d,

whichleads from and outot' a cnlflfwatercistern, c, passes and is extended through the middle of the roller, so as to nearly touch the head a, the said tube d being made of yan external diameter somewhat less in size than the internal diameter of the tubular journal- 4through which it iscarried. Ice `and water are placed in the cistern or reservoir c, or a stream of cold Water-.is caused to ow' into it.

plied. From thence it will liow back through the roller and finally escape throughwthe hollow. journals or eductiou-tubes. in its backward course it will be spread against thel inner surface of the cylinder and ei'l'ectually cool the same and the whole outside surfaceI of the cylinder.

V'In Stich attempts as we have made to keep .the lcylinders cool by water suil'ered to flow into onejournal and out of the opposite one,

`We iind it Iexceedingly (lifticult toeifect the same, on account of the current of cold 'water taking; a i rapid course directly through the mass of warmer water surrounding it. 1t does ynot impingedirectly against the inner curved surface ofthe roller, but moves directly through theroller in the liuc of its axis; butwhen an induction-tube is used and inade'toextend through. an @duction-tuin. placed on that end ot`\th eroller at which the induction-tube is appl-icd, we find i'roin experience that the war-in are provided wi th a water which will course directly against the internal surface of the cylinder and press the warm Water toward the entrance-tube and out; of the eililcioii-tube or journal.

For `this purpose I claim` The above-described means of cooling each of the cylinders by cold Water in the manner and for the purpose described-viz., by the eduction and' eduction tubes placed at one end of .the cylinder, and making the -induc'- tioi1-tube t'o extend through the eduction-tube and the middle of the cylinder and nearly to the other end of it, as specified.

In testimony whereofl have hereto set my i signature this '24th day of November, A. D.

.- EBENEZER ROWE.

Witnesses:

CALEB EDDY, R. H. EDDY. 

